package com.example.demo.day0305;

import java.lang.annotation.*;

public class Calculator {
    @Check
    public void add() {
        System.out.println("1+0=" + ( 1 + 0));
    }
    @Check
    public void sub() {
        System.out.println("1-0=" + ( 1 - 0));
    }
    @Check
    public void mul() {
        System.out.println("1*0=" + ( 1 * 0));
    }
    @Check
    public void div() {
        System.out.println("1/0=" + ( 1 / 0));
    }
    public void show(){
        System.out.println("no Bug");
    }
}
